Yes the school has numerous standards which ENFORCE gender roles, the result of which is that rather than allow them to ignore them, they have said 'well John is actually Joan today, that's why he has long hair'.
For example:
"Boys’ hair must not be too long (below the collar)"
"Girls’ hair should be neat"
"Girls must wear white, unbranded, ankle socks (100 denier black tights from after half term in October until Easter)." (boys no requirement)
"Girls are only allowed one earring in the lower lobe of each ear"
"Boys must not wear earrings. "
Sixth form:
"Male students must wear a suit, a smart shirt and tie, and formal shoes.
Female students must wear a two-piece suit with trousers or skirt, a top such that shoulders are covered at all times and smart shoes. Alternatively, students may wear a dress with a jacket
Girls may wear jewellery that is discreet and befitting a professional appearance. A member of the Wider Leadership Team
will rule on what is deemed acceptable. Equally make-up and nail varnish must befit a professional appearance."